# US 5,701,947 A · Die cast mould apparatus

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- Number: US 5,701,947 A
- Document ID: US5701947A
- Status: Granted
- Kind: A
- Application number: 08/551,495
- Filed: 1995-11-01
- Granted: 1997-12-30
- Earliest claimed: 1995-11-01
- Assignees: Exco Technologies Limited
- Inventors: Warren J. Bishenden
- Web page: https://patentgrep.com/patent/US5701947A

## CPC

- B22D 17/26: Mechanisms or devices for locking or opening dies
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)

## Abstract

A die cast mould apparatus having a base for supporting a mould body partially defining a mould cavity. A mould body insert is insertable in the partially defined mould cavity and may be locked in this position to complete the mould cavity. The mould body insert is mounted on a retainer which is mounted in a channel, in a support extending from the base. The retainer may be locked to the support in the channel by way of interlocking wedges on the retainer and wedge receptors in the channel walls of the support, thereby locking the insert in the position to complete the mould cavity.

## Claims

### Claim 1

A mould apparatus comprising:
a base for supporting a mould body partially defining a mould cavity;
a retainer for supporting a mould body insert in extending relationship therefrom;
said mould body insert for association with said partially defined mould cavity, to further define said mould cavity;
said retainer slidably mounted on a support for movement between a first position whereat said insert is substantially removed from said partially defined mould cavity and a second position whereat said insert is within said partially defined mould cavity to further define said mould cavity;
interlocking means comprising
a first one of a wedge receptor in said retainer and a slidable wedge supported by said retainer, and
a first complementary one of a wedge receptor in said support and a slidable wedge supported by said support; and
camming means interconnecting said retainer and said first wedge for extending said first wedge toward and into said first wedge receptor as said retainer is moved from said first position to said second position such that said first wedge engages said first wedge receptor when said retainer is in said second position to lock said retainer in said second position.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein
said support defines a channel; and
said retainer is slidably mounted within said channel, to allow said retainer to slide within and along said channel to move from said first position to said second position.

### Claim 3 (depends on 2)

The apparatus of claim 2 wherein,
said means to interlock said retainer to said support further comprises
a second one of a wedge receptor in said retainer and a slidable wedge supported by said retainer, substantially opposite said first one of a wedge receptor and wedge,
and a second complementary one of a wedge receptor in said support and a slidable wedge supported by said support, substantially opposite said first complementary one of a wedge receptor and wedge;
wherein said second wedge is adapted to engage said second wedge receptor to lock said retainer in said second position
and wherein said camming means interconnects said retainer and said second wedge for extending said second wedge toward and into said second wedge receptor as said retainer is moved from said first position to said second position such that said second wedge engages said second wedge receptor when said retainer is in said second position to lock said retainer in said second position.

### Claim 4 (depends on 3)

The apparatus of claim 3 wherein said first complementary one of a wedge and wedge receptor comprises a wedge receptor in a first wall of said channel.

### Claim 5 (depends on 4)

The apparatus of claim 4 wherein said second complementary one of a wedge and wedge receptor comprises a wedge receptor in a second wall of said channel, opposite said first wall.

### Claim 6 (depends on 5)

The apparatus of claim 5 wherein said camming means comprises
two cam roller slots in a third wall of said channel, extending between said first wall and said second wall;
said first and second wedges being slidably mounted in a directing passage in said retainer and attached to first and second cam rollers;
and wherein said cam rollers engage said cam roller slots, said cam roller slots configured such that said cam rollers extend said wedges from edges of said retainer toward said wedge receptors as said retainer is moved toward said second position.

### Claim 7 (depends on 6)

The apparatus of claim 6 further comprising a link rod and first and second link arms;
wherein said first and second link arms are each rotatably attached at one end to one of said cam rollers and are rotatably attached at a second end to said link rod,
wherein said retainer may be moved between said first and second positions and said cam rollers may be pushed along said slots to extend said wedges by pushing said link rod.

### Claim 8 (depends on 7)

The apparatus of claim 7, wherein said link rod extends from a linear actuator.

### Claim 9 (depends on 1)

The apparatus of claim 1 wherein said mould body insert, when inserted in said partially defined mould cavity completely defines said cavity.

### Claim 10

A mould apparatus comprising:
a first part for supporting a first mould body portion;
a second part for supporting a second mould body portion said second part moveable toward said first part along a first path such that said first and second mould body portions form a mould body partially defining a mould cavity;
a retainer for supporting a mould body insert in extending relationship therefrom;
said mould body insert for association with said partially defined mould cavity, to further define said mould cavity;
said retainer slidably mounted on a support for movement along a second path between a first position whereat said insert is substantially removed from said partially defined mould cavity and a second position whereat said insert is within said partially defined mould cavity to further define said mould cavity;
interlocking means comprising
a first one of a wedge receptor in said retainer and a slidable wedge supported by said retainer, and
a first complementary one of a wedge receptor in said support and a slidable wedge supported by said support; and
camming means interconnecting said retainer and said first wedge for extending said first wedge toward and into said first wedge receptor as said retainer is moved from said first position to said second position such that said first wedge engages said first wedge receptor when said retainer is in said second position to lock said retainer in said second position.

### Claim 11 (depends on 10)

The apparatus of claim 10, wherein
said support defines a channel; and
said retainer is slidably mounted within said channel, to allow said retainer to slide within and along said channel to move from said first position to said second position.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein,
said means to interlock said retainer to said support further comprises
a second one of wedge receptor in said retainer and a slidable wedge supported by said retainer, substantially opposite said first one of a wedge receptor and wedge,
and a second complementary one of a wedge receptor in said support and a slidable wedge supported by said support, substantially opposite said first complementary one of a wedge receptor and wedge;
wherein said second wedge is adapted to engage said second wedge receptor to lock said retainer in said second position
and said camming means interconnects said retainer and said second wedge for extending said second wedge toward and into said second wedge receptor as said retainer is moved from said first position to said second position such that said second wedge engages said second wedge receptor when said retainer is in said second position to lock said retainer in said second position.

### Claim 13 (depends on 12)

The apparatus of claim 12 wherein said first complementary one of a wedge and wedge receptor comprises a wedge receptor in a first wall of said channel.

### Claim 14 (depends on 13)

The apparatus of claim 13 wherein said second complementary one of a wedge and wedge receptor comprises a wedge receptor in a second wall of said channel, opposite said first wall.

### Claim 15 (depends on 14)

The apparatus of claim 14 wherein said camming means comprises
two cam roller slots in a third wall of said channel, extending between said first wall and said second wall;
said first and second wedges being slidably mounted in a directing passage in said retainer and attached to first and second cam rollers;
and wherein said cam rollers engage said cam roller slots, said cam roller slots configured such that said cam rollers extend said wedges from edges of said retainer toward said wedge receptors as said retainer is moved toward said second position.

### Claim 16 (depends on 15)

The apparatus of claim 15 further comprising a link rod and first and second link arms;
wherein said first and second link arms are each rotatably attached at one end to one of said cam rollers and are rotatably attached at a second end to said link rod,
wherein said retainer may be moved between said first and second positions and said cam rollers may be pushed along said slots to extend said wedges by pushing said link rod.

### Claim 17 (depends on 16)

The apparatus of claim 16, wherein said link rod extends from a linear actuator.

### Claim 18 (depends on 10)

The mould apparatus of claim 10 wherein said first path is a first linear path and said second path is a second linear path.

### Claim 19 (depends on 18)

The mould apparatus of claim 18 wherein said first linear path is not parallel to said second linear path.

### Claim 20 (depends on 10)

The apparatus of claim 10 wherein said mould body insert, when inserted in said partially defined mould cavity completely defines said cavity.

### Claim 21

A die cast mould apparatus comprising:
a base for supporting a mould body, said mould body partially defining a mould cavity;
a mould body insert to further define said mould cavity when said mould body insert is inserted in a partially defined mould cavity and locked in a position,
said mould body insert mounted on a retainer;
a support extending from said base defining a channel wherein said retainer is locked to said support in said channel by way of interlocking wedges and wedge receptors when said retainer is moved in said channel to further define said mould cavity; and
wherein one of said wedges and wedge receptors is on said retainer, and the other one of said wedges and wedge receptors is on walls of said channel.

### Claim 22 (depends on 21)

The apparatus of claim 21, wherein said retainer is slidably mounted within said channel.

### Claim 23 (depends on 22)

The apparatus of claim 22 wherein said wedges are on said retainer and said wedge receptors are on said walls of said channel.

### Claim 24 (depends on 23)

The apparatus of claim 23 wherein said wedges comprise a first and second wedge slidably mounted in a directing passage within said retainer and extendible from opposing edges of said retainer;
and said apparatus further comprises
a third wall of said channel, on said support, extending between said walls having said wedge receptors;
first and second cam roller slots in said third wall;
first and second cam rollers attached to said first and second wedges;
and wherein said cam rollers engage said cam roller slots, said cam roller slots configured such that said cam rollers extend said wedges from opposite edges of said retainer toward said wedge receptors as said retainer is moved in said channel to further define said mould cavity.

### Claim 25 (depends on 24)

The apparatus of claim 24 further comprising
a link rod;
a first link arm rotatably attached at one end to said first cam roller and at a second end to said link rod;
a second link arm rotatably attached at one end to said second cam roller and at a second end to said link rod;
wherein said retainer may be moved within said channel to insert said insert in said partially defined mould cavity and said cam rollers may be pushed along said slots to extend said wedges, by pushing said link rod.

### Claim 26 (depends on 25)

The apparatus of claim 25, wherein said link rod extends from a linear actuator.

### Claim 27 (depends on 21)

The apparatus of claim 21 wherein said mould body insert, when inserted in said partially defined mould cavity completely defines said cavity.